I'd like to see a level, a sort of mixture of Titan and Conquest, in which an ISD hovers over a Rebel base. The Imperials would have to capture the Reb base (it contains something special, not worth destroying), and the Rebs would have to capture the ISD.

Both sides would start with a shield (ISD shield and shield generator like Hoth), which can be destroyed by bombers or cannons (the ISD would have its guns, the Rebs some ion cannons). The guns would be located outside the shields (for the rebs, actually outside, for the Imps, they would stick through the shield like in Titan mode), and can be destroyed be fighters/bombers.

Once the respective shields are down, both sides can use transports to invade the base/ISD (they could be used as spawnpoints), and they then fight through, taking first the hangar, then turret control room, then command centre/bridge (with other rooms interspersed). The winner is the first one to capture the bridge/command centre (or destroy it, either way will work).

So, the battle starts with some nice dogfights, with those less confident in flying able to man cannons. It then progresses into escorting and landing transports, then into infantry fights.